From: Noralf Trønnes noralf@tronnes.org
[ Upstream commit dc659a4e852b591771fc2e5abb60f4455b0cf316 ]
drm_helper_hpd_irq_event() checks the epoch counter to determine connector status change. This was introduced in commit 5186421cbfe2 ("drm: Introduce epoch counter to drm_connector"). Do the same for output_poll_execute() so it can detect other changes beside connection status value changes.
v2: - Add Fixes tag (Daniel)
Fixes: 5186421cbfe2 ("drm: Introduce epoch counter to drm_connector") Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Signed-off-by: Noralf Trønnes noralf@tronnes.org Link: https://patchwork.freedesktop.org/patch/msgid/20210313112545.37527-3-noralf@... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/drm_probe_helper.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index ad59a51eab6d..e7e1ee2aa352 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -624,6 +624,7 @@ static void output_poll_execute(struct work_struct *work) struct drm_connector_list_iter conn_iter; enum drm_connector_status old_status; bool repoll = false, changed; + u64 old_epoch_counter;
if (!dev->mode_config.poll_enabled) return; @@ -660,8 +661,9 @@ static void output_poll_execute(struct work_struct *work)
repoll = true;
+ old_epoch_counter = connector->epoch_counter; connector->status = drm_helper_probe_detect(connector, NULL, false); - if (old_status != connector->status) { + if (old_epoch_counter != connector->epoch_counter) { const char *old, *new;
/* @@ -690,6 +692,9 @@ static void output_poll_execute(struct work_struct *work) connector->base.id, connector->name, old, new); + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] epoch counter %llu -> %llu\n", + connector->base.id, connector->name, + old_epoch_counter, connector->epoch_counter);
changed = true; }